In a bowl, mix together hoison sauce, soy sauce, ginger paste, lemon grass paste, garlic paste, and sesame oil. Once well incorporated add the half pound of London broil pieces to the bowl. Mix well and let the meat marinate in the refrigerator for 30 minutes. *Soak skewers in water while the meat marinates in the sauce.
Preheat grill to medium heat. Remove skewers from water, and remove the meat from the refrigerator. Rinse and prep all the vegetables. Begin skewering meat and veggies on to skewers, alternating as you'd like.
Place skewers on grill for 10 minutes, turning once. *Ensure the meat is cooked to your desire then plate on a bed of rice. Sprinkle with sesame seeds.